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# $OpenBSD: Makefile,v 1.2 2022/04/28 15:37:01 anton Exp $
# Copyright (c) 2022 Alexander Bluhm <bluhm@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
# Set up two loopback interfaces in different routing domains.
# One loopback interface has a allow-opts pf rule, the other has
# default pass policy. Send packets with IP options and IPv6
# option header and check wheter tcpdump finds them on lo or pflog.
# The following ports must be installed:
#
# scapy powerful interactive packet manipulation in python
.if ! exists(/usr/local/bin/scapy)
regress:
@echo Install scapy package to run this regress.
@echo SKIPPED
.endif
# This test uses routing domain and interface number 11 and 12.
# Adjust it here, if you want to use something else.
N1 = 11
N2 = 12
NUMS = ${N1} ${N2}
.include <bsd.own.mk>
.if ! (make(clean) || make(cleandir) || make(obj))
PF_STATUS != ${SUDO} pfctl -si | sed -n 's/^Status: \([^ ]*\) .*/\1/p'
.if empty(PF_STATUS:MEnabled)
regress:
@echo pf status: "${PF_STATUS}"
@echo Enable pf to run this regress.
@echo SKIPPED
.endif
PF_SKIP != ${SUDO} pfctl -sI -v | sed -n 's/ (skip)//p'
.if ! empty(PF_SKIP:Mlo*:Nlo0)
regress:
@echo pf skip: "${PF_SKIP}"
@echo Do not set skip on interface lo, lo${N1}, or lo${N2}.
@echo SKIPPED
.endif
PF_ANCHOR != ${SUDO} pfctl -sr | sed -n 's/^anchor "\([^"]*\)" all$$/\1/p'
.if empty(PF_ANCHOR:Mregress)
regress:
@echo pf anchor: "${PF_ANCHOR}"
@echo Need anchor '"regress"' in pf.conf to load additional rules.
@echo SKIPPED
.endif
.endif
.PHONY: busy-rdomains ifconfig unconfig pfctl
REGRESS_SETUP_ONCE += busy-rdomains
busy-rdomains:
# Check if rdomains are busy.
.for n in ${NUMS}
@if /sbin/ifconfig | grep -v '^lo$n:' | grep ' rdomain $n '; then\
echo routing domain $n is already used >&2; exit 1; fi
.endfor
REGRESS_SETUP_ONCE += ifconfig
ifconfig: unconfig
# Create and configure loopback interfaces.
.for n in ${NUMS}
${SUDO} ifconfig lo$n rdomain $n
${SUDO} ifconfig lo$n inet 127.0.0.1/8
${SUDO} ifconfig lo$n inet 127.0.0.$n alias
${SUDO} ifconfig lo$n inet6 ::1/128
${SUDO} ifconfig lo$n inet6 fe80::$n/64
.endfor
${SUDO} route -n -T ${N1} add -inet -host 127.0.0.${N2} 127.0.0.1
${SUDO} route -n -T ${N2} add -inet -host 127.0.0.${N1} 127.0.0.1
REGRESS_CLEANUP += unconfig
unconfig: stamp-stop
# Destroy interfaces.
.for n in ${NUMS}
-${SUDO} ifconfig lo$n inet 127.0.0.1 delete
-${SUDO} ifconfig lo$n inet 127.0.0.$n delete
-${SUDO} ifconfig lo$n inet6 ::1 delete
-${SUDO} ifconfig lo$n inet6 fe80::$n/64 delete
.endfor
rm -f stamp-ifconfig
addr.py: Makefile
# Create python include file containing the addresses.
rm -f $@ $@.tmp
.for var in N1 N2
echo '${var}="${${var}}"' >>$@.tmp
echo 'IF_${var}="lo${${var}}"' >>$@.tmp
echo 'ADDR_${var}="127.0.0.${${var}}"' >>$@.tmp
echo 'ADDR6_${var}="fe80::${${var}}"' >>$@.tmp
.endfor
mv $@.tmp $@
REGRESS_SETUP_ONCE += pfctl
pfctl: addr.py pf.conf
# Load the pf rules into the kernel.
cat addr.py ${.CURDIR}/pf.conf | /sbin/pfctl -n -f -
cat addr.py ${.CURDIR}/pf.conf | ${SUDO} pfctl -a regress -f -
# run tcpdump on lo and pflog device
DUMPCMD = /usr/sbin/tcpdump -l -e -vvv -s 2048 -ni
stamp-bpf: stamp-bpf-lo${N1} stamp-bpf-lo${N2} stamp-bpf-pflog0
sleep 2 # XXX
@date >$@
.for i in lo${N1} lo${N2} pflog0
stamp-bpf-$i: stamp-ifconfig
rm -f $i.tcpdump
${SUDO} pkill -f '^${DUMPCMD} $i' || true
${SUDO} ${DUMPCMD} $i >$i.tcpdump &
rm -f stamp-stop
@date >$@
.endfor
stamp-stop:
sleep 2 # XXX
-${SUDO} pkill -f '^${DUMPCMD}'
rm -f stamp-bpf*
@date >$@
# Set variables so that make runs with and without obj directory.
# Only do that if necessary to keep visible output short.
.if ${.CURDIR} == ${.OBJDIR}
PYTHON = python3 -u ./
PYPATH =
.else
PYTHON = python3 -u ${.CURDIR}/
PYPATH = PYTHONPATH=${.OBJDIR}
.endif
# ping
REGRESS_TARGETS += run-ping
run-ping: stamp-bpf
# Ping localhost on loopback
/sbin/ping -n -w 1 -c 1 -V ${N1} 127.0.0.${N1}
/sbin/ping -n -w 1 -c 1 -V ${N2} 127.0.0.${N2}
REGRESS_TARGETS += run-ping6
run-ping6: stamp-bpf
# Ping localhost on loopback
/sbin/ping6 -n -w 1 -c 1 -V ${N1} fe80::${N1}%lo${N1}
/sbin/ping6 -n -w 1 -c 1 -V ${N2} fe80::${N2}%lo${N2}
REGRESS_TARGETS += run-bpf-ping
run-bpf-ping: stamp-stop
# Check that ping packet went through loopback.
grep ' 127.0.0.${N1}: icmp: echo request' lo${N1}.tcpdump
grep ' 127.0.0.${N2}: icmp: echo request' lo${N2}.tcpdump
grep ' fe80:.*::${N1}: icmp6: echo request' lo${N1}.tcpdump
grep ' fe80:.*::${N2}: icmp6: echo request' lo${N2}.tcpdump
! grep ': icmp: echo request' pflog0.tcpdump
! grep ': icmp6: echo request' pflog0.tcpdump
# ping with RR option
REGRESS_TARGETS += run-ping-record
run-ping-record: stamp-bpf
# Ping localhost with record route option
/sbin/ping -n -w 1 -c 1 -V ${N1} -R 127.0.0.${N1}
! /sbin/ping -n -w 1 -c 1 -V ${N2} -R 127.0.0.${N2}
REGRESS_TARGETS += run-bpf-ping-record
run-bpf-ping-record: stamp-stop
# Check that ping packet with options is in pflog0.
grep ' 127.0.0.${N1}: icmp: echo request .*\
optlen=40 RR' lo${N1}.tcpdump
grep ' 127.0.0.${N2}: icmp: echo request .*\
optlen=40 RR' pflog0.tcpdump
# icmp
REGRESS_TARGETS += run-icmp
run-icmp: stamp-bpf
${SUDO} env ${PYPATH} /sbin/route -T ${N1} exec ${PYTHON}icmp.py N1
${SUDO} env ${PYPATH} /sbin/route -T ${N2} exec ${PYTHON}icmp.py N2
REGRESS_TARGETS += run-icmp6
run-icmp6: stamp-bpf
${SUDO} env ${PYPATH} /sbin/route -T ${N1} exec ${PYTHON}icmp6.py N1
${SUDO} env ${PYPATH} /sbin/route -T ${N2} exec ${PYTHON}icmp6.py N2
REGRESS_TARGETS += run-bpf-icmp
run-bpf-icmp: stamp-stop
# Check that icmp packet went through loopback.
grep ' 127.0.0.${N1}: icmp: type-#6' lo${N1}.tcpdump
grep ' 127.0.0.${N2}: icmp: type-#6' lo${N2}.tcpdump
grep ' fe80::${N1}: icmp6: type-#6' lo${N1}.tcpdump
grep ' fe80::${N2}: icmp6: type-#6' lo${N2}.tcpdump
! grep ': icmp: type-#6' pflog0.tcpdump
! grep ': icmp6: type-#6' pflog0.tcpdump
# option extension header
REGRESS_TARGETS += run-icmp6-hop
run-icmp6-hop: stamp-bpf
${SUDO} env ${PYPATH} /sbin/route -T ${N1} exec ${PYTHON}icmp6_hop.py N1
${SUDO} env ${PYPATH} /sbin/route -T ${N2} exec ${PYTHON}icmp6_hop.py N2
REGRESS_TARGETS += run-icmp6-dst
run-icmp6-dst: stamp-bpf
${SUDO} env ${PYPATH} /sbin/route -T ${N1} exec ${PYTHON}icmp6_dst.py N1
${SUDO} env ${PYPATH} /sbin/route -T ${N2} exec ${PYTHON}icmp6_dst.py N2
REGRESS_TARGETS += run-bpf-ext
run-bpf-ext: stamp-stop
# Check that icmp6 packet with extension headers were blocked
fgrep ' fe80::${N2}: HBH icmp6' pflog0.tcpdump
fgrep ' fe80::${N2}: DSTOPT icmp6' pflog0.tcpdump
! grep fe80::${N1} pflog0.tcpdump
# icmp with options
REGRESS_TARGETS += run-icmp-pad
run-icmp-pad: stamp-bpf
${SUDO} env ${PYPATH} /sbin/route -T ${N1} exec ${PYTHON}icmp_pad.py N1
${SUDO} env ${PYPATH} /sbin/route -T ${N2} exec ${PYTHON}icmp_pad.py N2
REGRESS_TARGETS += run-icmp-eol
run-icmp-eol: stamp-bpf
${SUDO} env ${PYPATH} /sbin/route -T ${N1} exec ${PYTHON}icmp_eol.py N1
${SUDO} env ${PYPATH} /sbin/route -T ${N2} exec ${PYTHON}icmp_eol.py N2
REGRESS_TARGETS += run-icmp6-pad
run-icmp6-pad: stamp-bpf
${SUDO} env ${PYPATH} /sbin/route -T ${N1} exec ${PYTHON}icmp6_hop_pad.py N1
${SUDO} env ${PYPATH} /sbin/route -T ${N2} exec ${PYTHON}icmp6_hop_pad.py N2
REGRESS_TARGETS += run-icmp-ra
run-icmp-ra: stamp-bpf
${SUDO} env ${PYPATH} /sbin/route -T ${N1} exec ${PYTHON}icmp_ra.py N1
${SUDO} env ${PYPATH} /sbin/route -T ${N2} exec ${PYTHON}icmp_ra.py N2
REGRESS_TARGETS += run-icmp6-ra
run-icmp6-ra: stamp-bpf
${SUDO} env ${PYPATH} /sbin/route -T ${N1} exec ${PYTHON}icmp6_hop_ra.py N1
${SUDO} env ${PYPATH} /sbin/route -T ${N2} exec ${PYTHON}icmp6_hop_ra.py N2
REGRESS_TARGETS += run-icmp-bad
run-icmp-bad: stamp-bpf
${SUDO} env ${PYPATH} /sbin/route -T ${N1} exec ${PYTHON}icmp_bad.py N1
${SUDO} env ${PYPATH} /sbin/route -T ${N2} exec ${PYTHON}icmp_bad.py N2
REGRESS_TARGETS += run-icmp6-bad
run-icmp6-bad: stamp-bpf
${SUDO} env ${PYPATH} /sbin/route -T ${N1} exec ${PYTHON}icmp6_hop_bad.py N1
${SUDO} env ${PYPATH} /sbin/route -T ${N2} exec ${PYTHON}icmp6_hop_bad.py N2
REGRESS_TARGETS += run-bpf-opts
run-bpf-opts: stamp-stop
# Check that icmp packet with options were blocked
grep ' 127.0.0.${N2}:.* optlen=4 NOP NOP NOP NOP)' pflog0.tcpdump
grep ' 127.0.0.${N2}:.* optlen=4 NOP EOL-2)' pflog0.tcpdump
grep ' 127.0.0.${N2}:.* optlen=8 NOP IPOPT-148{4} NOP ' pflog0.tcpdump
grep ' 127.0.0.${N2}:.* optlen=4 IPOPT-3{4})' pflog0.tcpdump
grep ' fe80::${N2}: HBH icmp6' pflog0.tcpdump
grep ' fe80::${N2}: HBH (rtalert: 0x0000) icmp6' pflog0.tcpdump
grep ' fe80::${N2}: HBH (type 0x03: len=0) icmp6' pflog0.tcpdump
! grep '127.0.0.${N1}' pflog0.tcpdump
! grep 'fe80::${N1}' pflog0.tcpdump
CLEANFILES += addr.py *.pyc *.tcpdump *.log stamp-*
.include <bsd.regress.mk>
|
